What to do next – Rockwell Automation 1771-TCM,D17716.5.108 TEMPERATURE CONTROL MOD User Manual

Page 79

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Calibrating the Module

Chapter 8

8-6

10.

In the calibration write block

a. turn on the calibration high/low bit (word 2, bit 0)

b. turn off the calibration clock bit (word 2, bit 1)

11. Send (block-transfer write) the calibration write block to the module.

12.

Request (block-transfer read) the calibration read block from the
module. If the input-calibration-bad bit in word 5 is off, and the
corresponding input-calibration-done bit in word 3 is on, the
procedure is complete for the corresponding loop.

If the bad-calibration-procedure bit (word 2, bit 0) is on any time
during the calibration procedure, an error occurred during the
calibration procedure. Repeat the calibration.

If the calibration hardware fault bit (word 2, bit 01) is on, the module
has a hardware fault. The module cannot be calibrated.

If the calibration reference out-of-range bit (word 2, bit 2) is on, the
input(s) did not calibrate because one of the reference signals was out
of range. Repeat the procedure. If this bit goes on a second time,
either the loop is bad, or there is a problem with the calibration
equipment.

To learn how to troubleshoot the temperature control module, read
chapter 9.

What to do next

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